Annular trough oil burner



JURY 19, 194-9. w, DOCKERY 2,476,709

, ANNULAR THOUGH OIL BURNER Filed Sept. 7, 1946 2 Shegts-Sheet l"IIYIIIIIVIIIIIIIIIII July 19, 1949; N. w. DOCKERY 2,476,709

ANNULAR TROUGH OIL BURNER Filed Sept. 7, 1946 2 Sheets-Sheet 2 M'clwfaaDockery.

Patented July 19, 1949 TRQUGH 01L BURNER.Nicholasw.Dockery,1tockingham,N.G.,assignor to Dockery Laboratories00., Rocklng'ham, N, Q,

vikmilicaiiioui September 7, 1946,'Seria1 No. $95,405

'3 Claims. 1

This invention relates to :a novel heater of the type especially adapteduse in heating a tobacco curing barn, said Heater including a casingafiording a combustion chamber and having at least one side outletnipple for the exit of products of combustion and a bottom air inletopening, and a multiple oil burner mounted in said opening, the outletnipple being adapted for connection with a heating pipe trained aboutthe interior of the barn and extended to a stack so that the hotproducts of combustion :fiowing' through the heating pipe cause heatingozf the barn.

An object of the invention is to provide a simple and efficient heateroftheabove kind in which novel provision is made to mount the burnerwithin the bottom airin'let opening of the casing.

A further object is to provide, in a heater of the above kind, a simple,efilcient and economical oil burner which can be easily and quicklyinstalled in the casing.

Another object is to provide an efficient multiple oil burner of theabove kind including a plurality of spaced concentric annular burnersections, each section embodying an annular oil trough and an oilvaporizing ring disposed within said trough, the edges of the troughsbeing rounded so that the air passing upwardly about the outer section,between the adjacent sections and within the inner section will curlaround said edges to efiectively mix with the films of oil issuing fromthe burner sections between the troughs and vaporizing rings thereof andthereby insure substantially complete combustion.

Other objects and features of the invention will become apparent fromthe following description when considered in connection with theaccompanying drawings, in which:

Figure 1 is a central vertical sectional view of a heater constructed inaccordance with the present invention, partly broken away.

Figure 2 is a horizontal section taken on line 2-2 of Figure 1.

Figure 3 is an enlarged fragmentary section through the burner, taken online 3-3 of Figure 2, and

Figure 4 is an edge elevational view of the burner.

Referring in detail to the drawings, 5 indicates a rectangular casingwhich affords a combustion chamber 6 and which has at least one sideoutlet nipple 1 for the exit of products of combustion. Formed in thebottom wall of casing 5 is a relatively large central air inlet 'ngv '8,the

casing 5 has a .remnvable cover or lid :9.

nimaltiple burner MI is mountedwithinthe opening d. In practice, thesidekontlet or nipples '1 is or are with a heating "pipe or trainedabontthe :inteni rof a tobacco curing barn and extended to a stacksci-hat the hot products of combustion ifiowingtlnzough the heating pipeor pipes cause heating of the :barn.

burner ill incluilssaplmiality of spaced concentric burner seutitms a, bc, and each section embodies an annular trough ii and an .oil ygring l1disposed within said trough: H of the burner-sections are .ziohaedintegrally by webs, 43., and arespaoed apartas at M to provide a :freeair supply between the burner. sections. Airis also supplied through"the central opening .45 of the inner burner section and between thewall of opening 8 and the outer burner section, said opening 8 being ofslightly greater diameter than the burner II]. A bored oil passage l6which extends through the webs l3, affords communication between thebottoms of the several troughs II, and oil is supplied to the troughs ofthe several burners through this passage and from an oil supply pipe l'lconnected to the passage It at the outside of the outer burner section.Integrally formed on and at the top of the outer wall of the trough llof the outer burner section, are horizontal projecting lugs l8 havingvertical screws l9 adjustably threaded therethrough. The screws [9 restupon the bottom of the casing 5 in surrounding relation to the opening 8so as to support the burner within said opening in spaced concentricrelation to the wall of the latter. By vertically adjusting the screwsIS, the burner may be levelled and supported at the desired height withrespect to the bottom wall of casing 5. The vaporizing rings I2 are ofslightly less depth and width than the troughs H and are centered withinthe latter by means of supporting lugs or ribs 20 integrally formed atcircumferentially spaced points on the outer sides of the vaporizingrings 12. Thus, a narrow space is left between each side of eachvaporizing ring and the adjacent side of the associated trough H so thatthe oil supplied to the troughs will issue therefrom through the spaces2| in thin arcuate films. The upper edges of the troughs II are roundedas at 22 so that the air passing upwardly about the outer burnersection, between adjacent burner sections, and within the inner burnersection will curl around said edges to effectively mix with the films ofoil issuing from the burner sections, and thereby insure completecombustion. The upper faces of the vaporizing rings are preferablyslightly concave as at 23 to form shallow wells for reception of anyexcess oil that may be supplied to the troughs and which may be ignitedin said wells by the flames at opposite sides thereof and above thespaces 2|. In practice, the vaporizing rings will assume apositionslightly below the upper edges of the troughs to insure passageof the excess oil into the wells 23. The troughs I I are preferably ofV-shape in cross-section, and

the rings I2 are of substantially triangular shape in cross-section, asshown. This causes the films of oil to issue from the spaces'zl inupwardly diverging relation so that the flames from the several burnerswill intersect and cause a swirling action calculated to promotecomplete combustion. To aid in turning or handling the vaporizing ringsI2, each is preferably provided with a upwardly projecting lug 26; l a,

From the foregoing. description, it is believed that the construction,operation and advantages of the present invention will be readilyunderstood and appreciated by those skilled in the art. Minor changesindetailsiof construction are contemplated, such as. fall within thescope of the invention as claimed. 1

WhatIclaim is: i 1. In a heater, a multiple oil burner comprising aplurality of spaced concentric burner sections of continuous form, eachsection embodying a continuous oil trough of substantially V-shape incross-section and an oil vaporizing ring of substantially triangularshape in cross-section disposed within said trough, spacing lugs oncorresponding sides of the-vaporizing rings for positioning the latterinslightly spaced relation the tops of the vaporizing rings are locatedslightly below the upper edges of the troughs, said vaporizing ringshaving concave upper faces to provide shallow excess oil receivingwells.

3. The construction defined in claim 1, wherein the troughs are providedwith rounded upper edges so that air passing upwardly between them willcurl around said edges for effectively mixing with oil films issuingfrom the burner sections between the troughs and vaporizing ringsthereof.

NICHOLAS W. DOCKERY.

REFERENCES CITED The following references areo record in the file ofthis patent:

UNITED STATES PATENTS Number 7 Name I Date 1,039,194 Raymond et a1.Sept. 24, 1912 1,441,008 Lovett Jan. 2, 1923 1,443,063 Wednfine et'al.Jan. 23, 1923 1,559,939 Dahl Nov. 3,1925 1,855,758 Hill et 21.1. Apr.26, 1932 1,933,044 Cannon Oct. 31,1933 2,021,810 Ruttiman Nov. 19, 19352,268,857 Dooley Jan. 6, 1942 2,399,589 Whitener Apr. 30, 1946

